зеркало из https://github.com/mozilla/gecko-dev.git
303 строки
10 KiB
C++
303 строки
10 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/Attributes.h"
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#include "mozilla/TsanOptions.h"
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#ifndef _MSC_VER // Not supported by clang-cl yet
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//
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// When running with ThreadSanitizer, we sometimes need to suppress existing
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// races. However, in any case, it should be either because
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//
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// 1) a bug is on file. In this case, the bug number should always be
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// included with the suppression.
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//
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// or 2) this is an intentional race. Please be very careful with judging
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// races as intentional and benign. Races in C++ are undefined behavior
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// and compilers increasingly rely on exploiting this for optimizations.
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// Hence, many seemingly benign races cause harmful or unexpected
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// side-effects.
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//
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// See also:
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// https://software.intel.com/en-us/blogs/2013/01/06/benign-data-races-what-could-possibly-go-wrong
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//
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//
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// Also, when adding any race suppressions here, make sure to always add
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// a signature for each of the two race stacks. Sometimes, TSan fails to
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// symbolize one of the two traces and this can cause suppressed races to
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// show up intermittently.
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//
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// clang-format off
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extern "C" const char* __tsan_default_suppressions() {
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return "# Add your suppressions below\n"
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// External uninstrumented libraries
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MOZ_TSAN_DEFAULT_EXTLIB_SUPPRESSIONS
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// These libraries are uninstrumented and cause mutex false positives.
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// However, they can be unloaded by GTK early which we cannot avoid.
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"mutex:libGL.so\n"
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"mutex:libGLdispatch\n"
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"mutex:libGLX\n"
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// For some reason, the suppressions on libpulse.so
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// through `called_from_lib` only work partially.
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"race:libpulse.so\n"
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"race:pa_context_suspend_source_by_index\n"
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"race:pa_context_unref\n"
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"race:pa_format_info_set_prop_string_array\n"
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"race:pa_stream_get_index\n"
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"race:pa_stream_update_timing_info\n"
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// This is a callback from libglib-2 that is apparently
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// not fully suppressed through `called_from_lib`.
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"race:g_main_context_dispatch\n"
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// This is likely a false positive involving a mutex from GTK.
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// See also bug 1642653 - permanent.
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"mutex:GetMaiAtkType\n"
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// TSan internals
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"race:__tsan::ProcessPendingSignals\n"
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"race:__tsan::CallUserSignalHandler\n"
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// Benign read/write races on bitfields
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//
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// WARNING: Bitfield races are only benign if one of the concurrent
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// accesses is a read. Write/write races on different parts of a
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// bitfield can have severe side-effects.
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"race:WalkDiskCacheRunnable::Run\n"
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// Modifying `mResolveAgain` while reading `mGetTtl`
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"race:RemoveOrRefresh\n"
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"race:nsHostResolver::ThreadFunc\n"
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// Another bitfield access, confirmed benign. Bug 1614697 - permanent.
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"race:nsHttpChannel::OnCacheEntryCheck\n"
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"race:~AutoCacheWaitFlags\n"
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// Deadlock reports on single-threaded runtime.
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//
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// This is a known false positive from TSan where it reports
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// a potential deadlock even though all mutexes are only
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// taken by a single thread. For applications/tasks where we
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// are absolutely sure that no second thread will be involved
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// we should suppress these issues.
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//
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// See also https://github.com/google/sanitizers/issues/488
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// Bug 1614605 - permanent
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"deadlock:SanctionsTestServer\n"
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"deadlock:OCSPStaplingServer\n"
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// Bug 1643087 - permanent
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"deadlock:BadCertAndPinningServer\n"
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// Bug 1153409
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"race:third_party/sqlite3/*\n"
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"deadlock:third_party/sqlite3/*\n"
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// Bug 1367344
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"race:TelemetryImpl::sTelemetry\n"
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// Bug 1506812
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"race:BeginBackgroundRead\n"
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// Bug 1506910
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"race:gMozillaPoisonValue\n"
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// Bug 1587510
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"race:SystemGroupImpl::sSingleton\n"
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// Bug 1587513
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"race:std::sync::mutex::Mutex\n"
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// Bug 1590423 - permanent
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"race:sync..Arc\n"
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"race:alloc::sync::Arc\n"
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// Bug 1600572
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"race:SchedulerGroup::CreateEventTargetFor\n"
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"race:SystemGroupImpl::AddRef\n"
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"race:SystemGroup::EventTargetFor\n"
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"race:SchedulerEventTarget::AddRef\n"
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"race:SchedulerEventTarget::Dispatch\n"
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"race:MessageChannel::MessageTask::Post\n"
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// Bug 1600594
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"race:nsThread::SizeOfEventQueues\n"
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// Bug 1600895
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"race:UpdateCellPointers<js::Shape>\n"
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"race:UpdateCellPointers<js::Scope>\n"
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"race:js::gc::MovingTracer::onShapeEdge\n"
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"race:fixupShapeTreeAfterMovingGC\n"
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// Bug 1601286
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"race:setFlagBit\n"
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"race:isFatInline\n"
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"race:AtomizeAndCopyCharsFromLookup\n"
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"race:inlinedMarkAtomInternal\n"
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"race:XDRInnerObject<js::XDR_DECODE>\n"
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"race:ScriptStencil::finishGCThings\n"
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"race:XDRScriptGCThing<js::XDR_DECODE>\n"
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// Bug 1619162
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"race:currentNameHasEscapes\n"
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// Bug 1601600
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"race:SkARGB32_Blitter\n"
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"race:SkARGB32_Shader_Blitter\n"
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"race:SkARGB32_Opaque_Blitter\n"
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"race:SkRasterPipelineBlitter\n"
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"race:Clamp_S32_D32_nofilter_trans_shaderproc\n"
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// Bug 1601632
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"race:ScriptPreloader::MaybeFinishOffThreadDecode\n"
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"race:ScriptPreloader::DoFinishOffThreadDecode\n"
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// Bug 1601980
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"race:image::RasterImage::StartDecoding\n"
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"race:image::RasterImage::OnImageDataAvailable\n"
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// Bug 1606651
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"race:nsPluginTag::nsPluginTag\n"
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"race:nsFakePluginTag\n"
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// Bug 1606800
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"race:CallInitFunc\n"
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// Bug 1606803
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"race:ipv6_is_present\n"
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// Bug 1606804
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"deadlock:third_party/rust/rkv/src/env.rs\n"
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// Bug 1606860
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"race:majorGCCount\n"
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"race:incMajorGcNumber\n"
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// Bug 1606864
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"race:nsSocketTransport::Close\n"
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"race:nsSocketTransport::OnSocketDetached\n"
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// Bug 1607212
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"race:CacheEntry::InvokeCallback\n"
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// Bug 1607138
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"race:gXPCOMThreadsShutDown\n"
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// Bug 1607426
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"race:PACLoadComplete::Run\n"
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"race:nsPACMan::ProcessPending\n"
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// Bug 1607446
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"race:nsJARChannel::Suspend\n"
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"race:nsJARChannel::Resume\n"
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// Bug 1607449
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"race:fill_CERTCertificateFields\n"
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"race:CERT_DestroyCertificate\n"
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// Bug 1607588
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"race:nssSlot_GetToken\n"
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"race:nssToken_Destroy\n"
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// Bug 1607704
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"race:nsUrlClassifierDBServiceWorker::OpenDb\n"
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"race:nsUrlClassifierDBServiceWorker::Shutdown\n"
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// Bug 1607706
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"race:TemporaryIPCBlobParent::CreateAndShareFile\n"
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// Bug 1607712
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"race:GtkCompositorWidget::NotifyClientSizeChanged\n"
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"race:GtkCompositorWidget::GetClientSize\n"
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// Bug 1607762
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"race:nsHtml5OwningUTF16Buffer::Release\n"
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// Bug 1608068
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"race:makeOwnBaseShape\n"
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"race:numDynamicSlots\n"
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// Bug 1608357
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"race:nsHtml5ExecutorFlusher::Run\n"
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"race:geckoservo::glue::traverse_subtree\n"
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// Bug 1608462
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"deadlock:ScriptPreloader::OffThreadDecodeCallback\n"
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// Bug 1612054
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"race:nsContentSecurityUtils::IsEvalAllowed\n"
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"race:nsContentSecurityUtils::ValidateScriptFilename\n"
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// Bug 1615017
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"race:CacheFileMetadata::SetHash\n"
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"race:CacheFileMetadata::OnDataWritten\n"
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// Bug 1615123
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"race:_dl_deallocate_tls\n"
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"race:__libc_memalign\n"
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// Bug 1615121
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"race:CacheEntry::Purge\n"
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"race:CacheEntry::MetaDataReady\n"
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// Bug 1615265
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"race:ScriptPreloader::OffThreadDecodeCallback\n"
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// Bug 1615569
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"race:mp_exptmod.max_window_bits\n"
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// Bug 1642906
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"race:EnsurePerformanceCounter\n"
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"race:GetPerformanceCounter\n"
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// ~GLContextGLX unlocks a libGL mutex that cannot be seen
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// by TSan because libGL is not instrumented.
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"mutex:GLContextGLX::~GLContextGLX\n"
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// Bug 1637707 - permanent.
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// Cannot suppress library because it is unloaded later
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"mutex:libEGL_mesa.so\n"
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// Probably false positives in Rust code
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"race:third_party/rust/parking_lot_core/*\n"
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// Rust library is not instrumented
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"race:/rustc/*.rs\n"
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"deadlock:/rustc/*.rs\n"
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"thread:std::sys::unix::thread::Thread::new\n"
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// Logging bug in Mochitests
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"race:mochitest/ssltunnel/ssltunnel.cpp\n"
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// Suppress thread leaks for now
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"thread:NS_NewNamedThread\n"
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"thread:nsThread::Init\n"
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"thread:libglib-2\n"
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// This thread does not seem to be stopped/joined
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"thread:mozilla::layers::ImageBridgeChild\n"
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"race:mozilla::layers::ImageBridgeChild::ShutDown\n"
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// Benign races in third-party code
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//
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// SIMD Initialization in libjpeg, potentially runs
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// initialization twice, but otherwise benign. Init
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// routine itself is in native assembler.
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"race:init_simd\n"
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"race:simd_support\n"
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"race:jsimd_can_ycc_rgb\n"
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// Likely benign race in ipc/chromium/ where we set
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// `message_loop_` to `NULL` on two threads when stopping
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// a thread at the same time it is already finishing.
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// See also bug 1615228 for discussion.
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"race:base::Thread::Stop\n"
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// End of suppressions.
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; // Please keep this semicolon.
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}
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// clang-format on
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#endif // _MSC_VER
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